Volvic Natural Spring Water starts out as rain and snow over a chain of ancient volcanoes in central France. This volcanic ecosystem acts like a gigantic filtration system for water as it slowly seeps through 6 porous layers of mineral-rich volcanic rock, and emerges years later as the Clairvic Spring in the town of Volvic. This is where the water is bottled - at its source. Volvic National Spring Water starts at the base of the Puy de la Nugere in Auvergne, one of the oldest preserved ecosystems in France. Volcanic rock not only acts as a natural filtration system, the mineral-rich rocks also give the water calcium, sulfates, magnesium, potassium, bicarbonates, silica, and other naturally occurring electroytes, giving this natural spring water its delicious taste. The Volvic Quality Laboratory conducts hundreds of tests each day to ensure that there is consistent purity and balance in each bottle of water.